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Diffstat (limited to 'sysdeps/ieee754/drem.c')
-rw-r--r-- | sysdeps/ieee754/drem.c | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/sysdeps/ieee754/drem.c b/sysdeps/ieee754/drem.c deleted file mode 100644 index cab3a04535..0000000000 --- a/sysdeps/ieee754/drem.c +++ /dev/null @@ -1,107 +0,0 @@ -/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -/* - * Copyright (c) 1985 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted provided - * that: (1) source distributions retain this entire copyright notice and - * comment, and (2) distributions including binaries display the following - * acknowledgement: ``This product includes software developed by the - * University of California, Berkeley and its contributors'' in the - * documentation or other materials provided with the distribution and in - * all advertising materials mentioning features or use of this software. - * Neither the name of the University nor the names of its contributors may - * be used to endorse or promote products derived from this software without - * specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <ansidecl.h> -#include <math.h> -#include <float.h> -#include "ieee754.h" - -/* Return the remainder of X/Y. */ -double -DEFUN(__drem, (x, y), - double x AND double y) -{ - union ieee754_double ux, uy; - - ux.d = x; - uy.d = y; -#define x ux.d -#define y uy.d - - uy.ieee.negative = 0; - - if (!__finite (x) || y == 0.0) - return NAN; - else if (__isnan (y)) - return y; - else if (__isinf (y)) - return x; - else if (uy.ieee.exponent <= 1) - { - /* Subnormal (or almost subnormal) Y value. */ - double b = __scalb (1.0, 54); - y *= b; - x = __drem (x, y); - x *= b; - return __drem (x, y) / b; - } - else if (y >= 1.7e308 / 2) - { - y /= 2; - x /= 2; - return __drem (x, y) * 2; - } - else - { - union ieee754_double a; - double b; - unsigned int negative = ux.ieee.negative; - a.d = y + y; - b = y / 2; - ux.ieee.negative = 0; - while (x > a.d) - { - unsigned short int k = ux.ieee.exponent - a.ieee.exponent; - union ieee754_double tmp; - tmp.d = a.d; - tmp.ieee.exponent += k; - if (x < tmp.d) - --tmp.ieee.exponent; - x -= tmp.d; - } - if (x > b) - { - x -= y; - if (x >= b) - x -= y; - } - ux.ieee.negative ^= negative; - return x; - } -} - -weak_alias (__drem, drem) |